interface: extend interface error messages in interface_set_up()

Don't return an error code in interface_set_up as it's ignored anyway by the
calling functions; but rather add more interface error messages so the actual
problem is visible for the user by doing ifstatus <interface>

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

2 files changed, 20 insertions, 16 deletions

diff --git a/interface.c b/interface.c
index 6be10e2..e143095 100644
--- a/interface.c
+++ b/interface.c
@@ -1047,31 +1047,35 @@ out:
 	return ret;
 }
 
-int
+void
 interface_set_up(struct interface *iface)
 {
 	int ret;
+	const char *error = NULL;
 
 	iface->autostart = true;
 
 	if (iface->state != IFS_DOWN)
-		return 0;
+		return;
 
 	interface_clear_errors(iface);
-	if (!iface->available) {
-		interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
-		return -1;
-	}
-
-	if (iface->main_dev.dev) {
-		ret = device_claim(&iface->main_dev);
-		if (!ret)
-			interface_check_state(iface);
-	}
-	else
-		ret = __interface_set_up(iface);
+	if (iface->available) {
+		if (iface->main_dev.dev) {
+			ret = device_claim(&iface->main_dev);
+			if (!ret)
+				interface_check_state(iface);
+			else
+				error = "DEVICE_CLAIM_FAILED";
+		} else {
+			ret = __interface_set_up(iface);
+			if (ret)
+				error = "SETUP_FAILED";
+		}
+	} else
+		error = "NO_DEVICE";
 
-	return ret;
+	if (error)
+		interface_add_error(iface, "interface", error, NULL, 0);
 }
 
 int
diff --git a/interface.h b/interface.h
index e5639eb..2b8b3b6 100644
--- a/interface.h
+++ b/interface.h
@@ -184,7 +184,7 @@ bool interface_add_alias(struct interface *iface, struct blob_attr *config);
 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state);
 
 void interface_set_available(struct interface *iface, bool new_state);
-int interface_set_up(struct interface *iface);
+void interface_set_up(struct interface *iface);
 int interface_set_down(struct interface *iface);
 void __interface_set_down(struct interface *iface, bool force);
 int interface_renew(struct interface *iface);